Make and bake cake mix as directed on box for 13x9-inch pan, using water, butter and eggs. Cool. Line cookie sheet with waxed paper. Crumble cake into large bowl. Add frosting and caramel topping; mix well. Shape into 1 1/4-inch balls; place on cookie sheet. Freeze until firm; keep refrigerated.

Remove from refrigerator a few at a time. Dip each cake ball into melted candy to cover; tap off excess. Poke opposite end of stick into foam block. Immediately sprinkle tops with toffee bits and salt. Let stand until set.